This paper deals with the study of the robustness concerning the attitude control of the spacecraft TARANIS regarding disturbances on its sun acquisition sensors. Two kinds of disturbances have been studied: the masking of the sunlight by the dierent spacecraft devices as well as the sunlight reexion on their surface. This study has been performed by doing rst the sensor and observer modeling on a simulator specially designed for the study from the whole spacecraft simulator. Then the modeling of the disturbances has been achieved depending on the characteristics of the sources in terms of size, positioning, roughness and light reection. Finally a set of simulations of the acquisition and survival mode has been executed in order to evaluate the impact of the disturbances on its convergence time. The study shows that the algorithm designed to calculate the spacecraft attitude from the solar sensors data set is robust concerning these disturbances with the actual design of the satellite, but also shows limits concerning the size and positioning of its devices.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:kth-119696 |
| Date | January 2012 |
| Creators | Catalon, Matthieu |
| Publisher | KTH, Aerodynamik |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | Trita-AVE, 1651-7660 ; 2012:78 |
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